Nut-lock.



w. E. YFINKBEINER.

NUT LOCK.

APPLICATION FILED JUNE 2.1914' 1 1 6]. 6%? v Patented Nov. 23, 19].").

k/zra f5 1 //9 10 i: if z I I S Fl- 3 Z3 gwuwwkoa.

WIEFFink baalmar',

WILLIAM E. FINKBEINER, 0F PORT CHESTER, NEW YORK.

NUT-LOCK.

Specification of Letters Patent.

Patented Nov. 23, 19115.

Application filed .Tune 2, 1914. Serial No. 842,344.

T 0 all whom it may concern:

Be it known that I, VILLIAM E. FINK- BEINER, a citizen of the United States, residing at Port Chester, in the county of Testchester and State of New York, have invented certain new and useful Improvements in Nut-Locks, of which the following is a speci-' fication.

This invention relates to nut locks and has for its object to provide a device of this character including a nut having a' recess formed concentrically of the bore thereof and receiving a coil spring fitting on the threads of the bolt for preventing the removal of the nut.

Another object is the provision of a nut lock including a spring locking'element having its outer end anchored in the nut and its opposite end directed outwardly beyond the outer face of the nut to provide a handle, whereby the coils of the spring locking element may be unwound or expanded to permit removal of the nut from the bolt.

-With these and other objects in view, the invention consists in the novel construction, arrangement and formation of arts, as will be hereinafter specifically descrlbed, claimed and illustrated in the accompanying drawing, in which:

Figure 1 represents a longitudlnal sectional view through a nut lock and bolt. Fig. 2 represents a sectional view through the nut and bolt, indicated on the line 22 of Fig. 1. Fig. 3 represents a side elevation of the locking element removed.

Referring to the drawing in detail, where in similar reference numerals indicate corresponding parts throughout the several views, the numeral 5 indicates a bolt of ordinary construction having a head 6 at one end and screwthreads 7 extending adlstance inwardly from the opposite end. A nut 8 is fitted on the threaded end of the bolt 5 and is formed in its upper face withan inwardly directed recess 9 formed concentrically with the threaded bore therethrough and constituting an enlargement of the latter.- Adjacent the top or outer face of the nut 8 a recess or opening 10 is formed through one of the walls of the recess 9 and the radlally directed end 11 of the locking element 12 is positioned in the recess or openlng 10 and thereby anchored in the nut. The locking element 12 is formed from spring wire of adequate thickness coiled a plurallty of times as in a coil spring, the coils of which snugly fit the threads 7 of the bolt. The angularly directed end 11 of the locking element 12 is formed at the outer end of the latter, the inner end thereof terminates nearly adjacent to the inner end of the recess 9, as clearly shown in Fig. l. The inner end 13 of the spring locking element 12 is directed outwardly between the coils and the wall of the recess 9, is disposed parallel with the longitudinal axis of the bolt 5 and terminates a distance beyond the outer face of the nut 8. The exposed portion of the end 13 constitutes a handle which may be conveniently gripped by the fingers or by a suitable tool to unwind orexpand the coils of the locking element, wherebythe latter may be rotated in either direction upon the bolt. As the nut 8 is rotated to advance upon thethreads 7 of the bolt 5 the coils of the locking element 12 tend to expand and therefore offer only slight resistance to the inward movement of the nut, however, when the nut is moved in-th'e opposite direction the coils of the locking element are contracted or drawn tightly .around the threads 7, thus frictionally locking the nut against accidental removal. When it is desired to remove the nut the angularly directed end 13 is gripped by the fingers of the operator or a tool and moved so as to expand the coils on the locking element and thus permit the nut 8 to be unscrewed and remunicatingwith the opter end of said annular recess, the outer end of said coil spring being directed outwardly and anchoredin said opening, the opposite end of said spring being disposed parallel with the longitudinal axis of the nut and extended a distance out ardly of the outer face of the latter to pro fie a*handle whereby the coils of the spring may be spread or expanded to permit removal of the nut from a bolt.

In testimony whereof I afiix my signature in presence of two witnesses.

WILLIAM E. FINKBEINER. Witnesses:

W. C. DAVIS, L. M. RADEL. 

